Refining and beating engine



May 29, 1934. ca. P.' PRATHER I 1,960,753-

: REFIN'ING AND BEATING ENGINE v Filed May 23, 1933 4 Sheets-Sheet 1 v My 1934- G. P. PRATHER I 1,960,753

REFINING AND BEATING ENGINE Filed May 25, 1953 4 Sheets-Sheet 2 May 29,1934. H R 1,960,753

REFINING AND BEATING ENGINE Filed May 23. 1933 4 Sheets-Sheet 3 May 29,1934. P THE 1,960,753

REFINING AND BEATING ENGINE Filed May 23, 1933 4 Sheets-Sheet 4 Maw;

Patented May 29, 1934 PATENT OFFICE REFINING 'AND BEATING ENGINE GrahamP. Prather, Adams Center, N. Y., as-

signor to Dilts Machine Works, Inc., Fulton,

Application May 23, 1933, Serial No. 672,477

6 Claims.

This invention relates to refining and beating engines designed to actupon materials used in the manufacture of paper. This invention isadapted to utilize a tub of somewhat similar construction to a beatertub or vat, and. employing in this vat a refining element generallysimilar to a Jordan plug and shell. It is the object of this inventionin its broadest aspect to make the interior of the plug, whether theplug be frusto-conical or cylindrical, in the form of a screw, worm, orequivalent propelling means, and differing from the conventional type ofplug in that there is no wood, metal or other filling between the bars,the bars being carried by the propelling means in spaced relation. Thispermits centrifugal force to act upon the stock propelled through theinterior of the plug, and this stock is thrown outwardly and is actedupon by the knives of the shell or plug or both. The worm formconstruction insures a positive feed for the stock at all timesirrespective of the density, and will likewise create definitecireulation of the mass of stock around the tub and midfeather. Thedirection of the flow may be in either direction depending upon therevolution of the propelling means, although it is thought to be themore effective method to have the stock enter the large end of the shelland plug and discharge at the small end, since this coursewould have theeffect of building up a higher pressure of the stock between the plugand shell and attain greater hydration. This invention is in no senselimited to the direction in which the stock passes through theapparatus, or to the pitch or slant of the portions of the propellingmeans, various modifications of which are illustrated in theaccompanying drawings.

Fig. 1 of the drawings represents a side view of a refining engine,partly in vertical longitudinal section, and showing all partsassembled.

Fig. 2 is a top view of a tub, showing the midfeather and this inventionin conical form arranged between the midfeather and one wall of the tub.

Fig. 3 is a top view of a tub, showing the midfeather and this inventionin cylindrical form arranged between the midfeather and one wall of thetub at the side of the tub, as in Fig. "2.

Fig. 4 is a vertical cross section of the parts and on the broken line44 of Fig. 3.

Fig. 5 is a longitudinal section of a shell of artificial stone or likematerial, showing a spiral propelling device of similar material havingthe peripheral face of the spiral fluted and adapted to coact with theinterior of the shell.

Fig. 6 is a spiral of artificial stone or the like, the face of thespiral being grooved or slotted or recessed, and the grooves providedwith short individual bars.

Fig. 7 is a longitudinal section of a shell provided with internalknives, the propelling means being a plurality of bladed propellers ofdiffering size and pitch, and carrying peripherally the usual bars orknives arranged to coact with the Y knives of the shell.

Fig. 8 is an end view of the propelling members set forth in Fig. 9-.

Fig. 9 is a-longitudinal section of a shell with propellers arrangedtherein and provided with bars or knives to coact with the like featuresof the shell, the propellers being substantially of the same size.

Fig. 10 is a top view of a tub or vat having a V-shaped midfeather, andprovided with this invention arranged transversely at one end of the tubbetween the wide end of a mid-feather and the end wall of the tub.

Throughout the drawings and description the same numbers .are used torefer to the same parts.

Considering the drawings, Fig. 1, a base 1, has bearing standards 2 and3 for" shaft bearings 4 and 5 carrying shaft 6. The shaft may be drivenby pulley 7, and adjusted in either direction by means of the handwheels 8 and 9 and the screw 10. Those parts are of ordinary structureand operation in engines of this nature, and form no part of thisinvention.

At one end is located a flanged pipe coupling 11 having a stufling box12 for the passage of the shaft 6. By way of this pipe the stuff mayenter or leave the shell 13, having the internal knives 14, andco-operating with a spiral propelling element 15, provided with anynumber of spaced fiybars 16 secured in grooves 17 and without fillingbetween the the spaced bars as illustrated. At the other end of theshell is located a second pipe coupling 18 with a stufl'ing box 19 forthe shaft, and in Fig. 1 will be noted the removable spacer rings 20 and21 that enable the wear of the shell tobe taken up in accordance withthe Letters Patent of the United States numbered 1,873,199 and owned bythe assignees of all rights in this instant invention.

Considering Fig. 2, the tub 22 has the midfeather 23, and a shell orother enclosure 24 which may v vide with bars or knives 30, or otherdevices capable of coacting with the knives carried by the shell in thecustomary manner. In this figure the shell and spiral are offrusto-conical form.

Considering Fig.3 the tub31 hasthe midfeather 32, and the lower portionof the shell, or enclosure for the propelling devices and marked 33, hasa curved bed plate 34 provided with knives or the like arranged to coactwith the-beater roll, as best shown in the sectional view Fig. 4 Thelower shell portion 33 has a removable cover 35. Shaft 36 is carried inadjustable bearings 3'7 and 38, and means are included for raising orlowering the hearings to adjust the beater roll devices with respect tothe bed plate 34 when required. The adjusting parts for thebearings-comprise a worm wheel 40 at the right hand end. in combinationwith a worm such as the worm 41 on shaft 42,

the shaft being actuated by the handwheel 43. The shaft may be driven bythe pulley 39, and the means for raising and lowering the bearings issubstantially the same as illustrated and described in Letters Patent ofthe United States Numbered 820,137, dated May 8, 1906. Carried by theshaft 36 are the usual beater bars 44 on the spiral propelling means 45,which in Figs. 3 and 4 is cylindrical.

Fig. 5 represents a longitudinal sectional view of a shell 46 of stonecomposition, and the spiral propeller 47 on the shaft 48 is also ofsimilar material with a relatively wide peripheral surface or facehaving fluted formations 49. Obviously, these shapes may be variouslymodified within the purview of this invention. a

. Fig. 6 sets out a longitudinal section of another modification,wherein the spiral 50 with the widened face and carried by shaft 51, hasshort bars 52 in grooves 53. In this view are also illustrated depressedrecesses 54, and it is believed to be within the scope of this inventionto form the face of the spiral with projections, depressions of anychosen shape. The use of a shell and worm plug constructed of stone,basalt, carborundum or other abrasive materials which are now employedin Jordan and beater rolls, and having the faces of the worms widenedout to present'a substantial surface area in contact with a similarstone or abrasive shell interior gives the effect of high brushingefficiency without cutting. The introduction of a worm for propellingthe stock as herein described is more effective and also the brushing isbeing carried on over the entire interior surface of the shell insteadof by means of a bedplate beneath the roll as in present beaterconstructions.'

Fig. 7 presents a longitudinal sectional view of a shell 55, with knives56, arranged to coact with knives 57 on rings 58. Within the rings andattached thereto or integral therewith are bladed propellers 59, 60and61, which may be of different pitch, and it may be further mentionedat this point that the spiral propelling members described may vary inslant or pitch if -so desired, and where it is intended to vary themovement or throw of the stufi. In Fig. 7 the propellers are on theshaft 62.

Fig. 8'is an end view of the construction illustrated in Fig. 9, whichis a section lengthwise of a'shell 63 having the knives 64 coacting withknives 65 on rings 66. The propellers 6'7, 68 and 69 are attached to therings 66 or integral therewith as previously explained, and thepropellers are carried by shaft 70. In Figs. 8 and 9 the propellers areof substantially the same diameter.

Fig. 10 represents a top view of a tub ,71, havmotor 80.

In the operation of this invention, as previously mentioned, the stuffis served to the shell at either the larger or the smaller end thereof,and the process may be carried forward. at considerable velocity. Oneobjection to the use of Jordans in the place of heaters is that severalof them have to be connected in series, the stock passing immediatelyfrom one to the next in order to get a comparable reduction in fibre andhydration to that obtained in a beater, and the stock is apt to heat upto a critical temperature. With the construction as herein shown anddescribed thestock has a chance to aerate in the large vat and at thesame time the elements illustrated may work on it as many times asnecessary to effect the complete reduction.

Having now described this invention and the manner of its use, I claim:

1. A pulp beater having in combination, a beater casing, a beater rollin said casing comprising pulp propelling devices provided peripherallywith means adapted to cooperate with said beater casing and to act uponstuff thrown outwardly by said propelling devices against the interiorof the casing, the said propelling devices being constructed to propelthe pulp at different rates of speed at different points lengthwise ofsaid casing.

2. A truncated conical beater roll comprising a shaft, a truncatedconical worm upon said shaft forming a spiral passage for propelledstuff, and beater bars running across the outer edges of said wormblades, forming the surface of the truncated conical roll, said barsrunning longitudinally with the said shaft and being fastened atintervals upon the periphery of the said conical worm and across saidspiral passage.

3. In a beating engine, a tank having a channel at one end forming ashell having internally means adapted to act upon stuff passing throughthe channel, a midfeather extending lengthwise in the tank and havingone end in contact with and equal in width to the length of said shell,said midfeather having converging sides, and a beater roll in said shellhaving externally means adapted to act upon stuff passing throughagainst the shell, and having devices constructed to propel stuffthrough the roll and channel and to throw the stuff centrifugallyagainst the shell.

4. In a beating engine, in combinatipn, a shell having interiorly aseries of knives extending lengthwise, said knives being located atintervals entirely around the interior of the shell, a shaft, a wormcarried by the shaft, the outer spiral edge of the worm being widenedand provided with means on said widened edge to co-act with the saidknives of the shell upon stuff passing through and thrown outwardlyagainst the knives.

5. Ina beating engine, a shell of cementitious material, a shaft, a wormof cementitious material carried by the shaft and having a widened outeredge constructed to co-act with the interior of the shell upon stuffpropelled through the shell and thrown outwardly against the shell.

6. In a beating engine, in combination, a shell having interiorly aseries of knives extending being constructed and arranged to move stufithrough the shell in one direction and to throw the stud outwardlybetween the ends of the shell and upon the knives of the shell.

GRAHAM P. PRATHER.

